Apparatus for heating electrical units.



H H. RUSSELL. APPARATUS POR 'HEATING ELEGTMGAL UNITS.

APPLICATION FILED APR.6,1911,

Patented June l1, 1912 S SHEETS-SHEET L H. H. RUSSELL. I APPARATUS EUR HEATING ELECTRICAL UNITS.

APPLICATION FILED APE. e, V1911. Patented June 11, 1912 s SEEETS-SEEET 1,o219;23o. s

J' LZ C7. I zii/W.

nin-hh 11. HTRUSSELL.' AYPARATUS POR HEATING ELECTRICAL UNITS.

APPLICATION FILED APRA 6, 1911.

3 SHEETS-SHEET 3.

To camcom it may concern:

l tmerrnn s 'rn'rns rirtrNtr onirica.

nenne mnussiinn, or Nnw'onx, N.` Y., AssxGNon 'ro WALTER nfrroDsoN, or

l JANESVILLE, WISCONSIN.

teniamos non HEATING ELECTRICAL UNIV'rs.

new@ f .Bet known that I', HENRY H., RUSSELL, a citizen of the United States, residing at New `York, county of New York', and State of New York, `have invented a certa-in new and usefful Improvement in Apparatuses is illustrated for Heating Electrical Units; of which the following is a specification. i

My invention relates to.- improvements in apparatus for heating electrical units, and

diagrammatically in the accompanying drawings, wherein- Fi,1, ;ure` 1 is a vertical section Fig. 2, a

y sectionalong the line 2-#2 of Fig. l; Fig

3, a section along the 'line 3-3 of Fig. 2; Fig. 4, a section alongthe line 4 4 of Fig. 2; Fig. 5, a detail side elevation; Fig. 6, a diagrammatic representation of the wiring mechanism; Fig. 7, a vertical section through a modin'cation; Fig. 8, a detail of a heating unit in planyiew with parts removed Like parts are indicated by like letters I throughout the several `figures.

by the insulating material A and bounded at its'top by The casing A which ismounted upon the legs'A1 contains the chamber A2 Surrounded the horizontal wall A4 which with the upwardly projecting to support the insulated cover is provided extension A5 A and form. the heating 'chamber A7. The

bottoni Wallet` the chambei'-A2 is provided withth'e perforated insulating blocks B to which are attahed the spring Contact mem- 'bers` BP" in opposition to'gthe'conducting sleeves EB which yare rsupport/ed.at gt-heir. upper extremity in the insulatingy plate BJY which forms the top 'oflthe chamber, pass through the .perforations in the blocks B andare held at their bottom by the insulat- ,Y ing'bloclcs B1* in the bottom of the casing A.

The rods BF Awhich are carried by the cover A beinginsulated therefrom and from each other by the position shown 1n Fig. 1 1n. contact conducting sleeves with the ,B1 vwhich act as terminals y B9 'and-enculee in contact with the conduct-- pecication' of Letters Patent. Anplicetion med April e, 1911. Serial No. 6i9,230.

vinsulating 'plate 1B, `are, in .the

orthe4 resistance coils Bin the radiators dPatented J unewll, 1912. l

neted to any suitable source of electric supply not shown pass into the ncasing through the insulating sleeve C7 and lenter the chamber A2 through vthe wall-thereof, and termlnate-respectvely in the binding'post C5 on one of the spring 'contacts B1, and in the spring contact C". The conductor-C9 leads 4"from theswitch C3 to the lbinding' post Clo on one of the springc'ntacts Bhand the conductor. C leads fronithe switch C3 to the solenoidv C. The conductor C12 leads from the other end "of saids'ol'e'noid to the adjustable contactscre'w ,C131 in opposition to thetherlnostat C, whiclrlatter is connected by the conductor C15-to the binding Ypost Cs. The rod D isslidably mounted in the Wall of thecasing 'A and attached to the rod. C1 to controlthe swtcl1"'C." The Y. rod D1 1s rotatably mounted in the casing A and yattached at one end to the head ofthe screw C18 and at the other end is provided with a knurl head Dzand the' finger Ds in opposition to the dial D4. Y

AIn. the modifications illustrated in Five. 7 and 8 a metalliecasing E having aA flat metal top E1 rests upon the Wall A4. The resistance unit E2 is insulated from the top El by mica orl other suitable insulating material permitting the passage; of heat and is insulated from the wall A? by any suitable heat resisting packing through vwhich pass the rods E5 to Y contact the sleeves B2.

Referringv to .the wlrmg 'dlagram 1n F 1g. 6, when the rod C16 has been drawn out '-l iri nging the knife switch C3 `in Contact Lwith the spring terminal C4 the path of the current throughA the heateris as lfollows; from the' conductor C5 to the bindingpost (13, Vspring contact B1, rod B5, resistance coil-in the-heating unit B8, rod B5, spring contact B1, binding post C, conductor", knife switch C, spring terminal C4, ,and conductor C back to the source of supply. Ast-he temperature rises the thermostat C14 is caused thereby to benddownwardly until its end is brought in to Contact with the adjustable terminal C128 whereby :a shunt circuit is closedr from lthe conductorI C5' through the binding post Cs,`condi1ctor C, thermostat C, terminal C1", conductor C, solenoid C, conductor C, Switch C, ter. minal` C* and conductor C,lthusenergizing thesoleno-id-C causing it to drawin the plunger C1 and release the knife switch C3,

)thus shutting oli' the electric current through the heating units. It will be observedthat the position of the terminal Cla in opposition to the solenoid may be adjusted by rotating the screw and that I provide at the 4head of the screw a pointer and scale, whereby the operator mayy set the device for any suitable degree of heat at his option. v i

It will be evident that While, I have shown in my drawings an operative device, still many changes might be made in the size, shape and arrangement of parts without departing materially from the spirit of myinvention, and I wish, therefore, that my drawings be regarded as in a sense diagrdmmatic.

The use and Aoperation of my linvention are as follows: M heater is adapted for use -within the heating chamber being careful to arrange them in such manner that the holes.

through'the radiators correspond with the holes 1n the insulating block at4 the bottom ons of the chamber. I then place the cover upon the chamber passing the insulated rods on the cover through the holes in the radiators thus bringing the rods and sleeve terminals within the radiators in electrical contact one with the other. I then force the rods down into the holes in the insulating block at the bttom of the chamber where they come in contact with the sleeve terminals in these blocks. I then turn on thecurrent, connecting upV the sleeve terminals in the insulating block with any suitable source of power. The current passes from these terminals up through the insulated conducting rods and across between the terminals in the radiators and thr'ou h the resist-ance circuit thus heatin the ra iators from the inside out. It wil be eyident that, in view of the fact that the resistance unit is contained within the radiators I am enabled to heat them with the minimum of waste.l It will also be evif dent thatin view of the fact that'they', heat from the inside outwardly no heat whatever is lost, by radiation or otherwise until it is passed from the resistance unit-completely ythrough the body of the radiator. -As the current continues passing throughtlie radin? tors the temperature constantly jrises until a temperature is reachedsutiicient to operate the -thermostat and turn o automatically the current. The cover may then be .ref moved and the heat radiator used in 'any suitable manner. It will be observed that by this means there are no projecting live terminals, that is, no terminals which will l by any possibility be in connection with the sou1jces of power, since even were I"the currentfturned on, the live terminalsleeves are' embcddedvdeep within the insuting block and cannot be reached and vthe` ircuit can only be completed by insertin ing rods into the insulating b ook.' It'will be evident that by means of this heater and -by using the specially prepared radiator any danger of accident from fire, such as would be the case with a radiator having outside terminals and which might be allowed t0 heat up near infiammable material, is 'obviated in view of thevfact thatl aparticular kind of radiator-"must be placed in a ular kind of receptacle-and connect up in l'a particular manner before any current can pass through the resistance wires inthe radiator.

Fig. 8 I remove the cover and heating units" and substitute therefor-'the flat metallic casing which is so arranged that it is supported on the bottom of the heating chamber and' articconduct- 4comes substantially to the top of the surrounding wall. The resistance circuit in the top surface thereof is then heated inthe usual manner and thereby I am able to provide an electric stove or frying pan using the heat in the resistance circuit to warm resisting insulation located within'- saidiiat metallic casing protects the thermostat from the iniiuence of the heat and permits the use of this device as a stove without reference to or change in the adjustment of the thermostat. That is to say, when it is desired to use the device as a stove rather than as an automatically controlled heating means for removable radiators, it will be evident that some means must be found for rendering the thermostat, normally set to throw oi? the heat at certain temperatures, inoperative, and in order that there'be no danger of the operator, when he desires to use the stove, A

throwing off the thermostat and leaving itl when he desires to heat' the radiators,.=I

'device for any suitable degree of heat at his option. I

It will 4be observed that one of the objects of this device is the heating of electrically heated removable heat retaining members 'merely insert between the fiat cooking or In using the L`modification illustrated in for tireless cookers, and in order that as `little heatas possible. be wasted while this ,heating is' taking placev and in order that they mayA more conveniently be brought to a high temperature with a minimum amount -of energy, the insulating packing is provided to prevent undue radiation. lIt is true thatthis device kas indicated in modiiied form in Fig. 7 may be used as an electricV i rather that the usual use of the devicd. It

j is quite impossible,

has been found that radiators such as those adapted kto be usedy in this connection, that lis to say, soap stone orother radiators for tireless cookers, if heated .without some such insulating protection and heated in connection with ,inflammable material frequently cause fire, but when .protected by the insulaz tion and held in a casing such as this, that it to ignite objects withput the casing which are protected by the yinsulating lining, the heat operates uponithe'zthermostat and shuts ofi' the current.

-It will be observed that the device of applicant contains two entirelyand completely insulated rods which are not energized until they are placed in the sockets and thrown in contact with the buried terminal.

I claim:

1. A radiator heater comprising a heating chamber electric heating elements therein and a cover therefor insulated conducting rods carried by said cover and terminals in opposition to said conducting rods.

2. A radiator heater comprising a heating `chamber electric heating elements therein and a cover thcretor insulated conducting rods carried by said cover and terminals in opposition to said vconducting rods terminals located below the bottoin ofi.` said` heating chamber.

k 3. A radiator heater' comprising a heating chamber electric heating element-s therein and a cover therefor insulated terminals embedded in the bottom wall of said chainber and conducting rods in opposition thereto carried by said cover and penetrating y said wall.'

4. A radiator heatci" comprising a heating chamber electric heating elements therein 'and a cover therefor a pliirality ot live elecand a cover tric terminals adjacent- Asaid chamber and dead terminals carried by said cover passing through said chamber and in contact with` said live terminals.

5. A radiator heater comprising a heating chai/uber electric heat-ing elements therein therefor, an insulating block below said chamber, live terminals em- .55`lddcd within said block` and conducting because as I have shown, before thevlheat becomes sufliciently4 intenserods insulated one from the other carried by said cover located withinpsaid chamber and in contact with said embedded' termi- ,v

nals. 4

' A radiator heater comprising a heating chamber electric heating elements therein a cover therefor terminals located below said chamber and means responsiye to the position of said-cover for lacing a circuit liet-Ween said terminals thrg ofyelectrically heated unita". 1 I

7. A radiator heater comprising s; heating chamber electric heating elements .therein and a 4cover therefor conducting rods'insulated one from-the .other' and carried by..

said cover and means responsive to the .posi-i tion of said cover for energizing said rods; 8. An electric heating apparatus comprising radiators a plurality oflburied terminals therein, conductin rods in contact with said terminals an -resistance "circuits located within said radiator. f

9. A' radiator heater comprising 'aninsulated chamber electric heating elements therein a removable cover therefor provided with a pair of contact rods, an. .insulating plate, conducting sleeves embedded therein in opposition to said rods'and means for 'connecting said sleeves to anelcctric circuit.

l0. A radiatorheater comprising a heatelectric heatixig elements ing chamber,

therein a cover therefor, insulated ,conduct-v ing rods carried by said cover, terminals in opposition to said conducting rods, said rods being slidably mounted wlth respect t0 said terminals for throwing them into anelectric circuit.

11. A radiator ing chamber' 'electric heating elements therein a cover therefor,

insulated .conducting rods carried by said cover, terminals in opposition to said conducting rods, said terminals located below the bottom of said heating chamber, said rods being slidably mounted with respect tto said terminals for throwing them into-a1iif electric circuiti y l12. A radiator heater comprising an ,insulated chainber,.1elctric heating Ael ments therein live terminals in connectionlvthere# with, a thermostat in connection with one ugh ai 'plurality loof ivtheater comprising n. heatias of said terminals, and meansresponsive to the temperature within said chamber for operating said.. thermostat to break the circuit within said terminals. if i 13. A radiatorhcater comprising ad insulating chamber electric hcating elements therein electric terminals in connection therewith, a circuit therefor and a. heating member located therein and in` connection with said terminals, a thermostatadjacent said chamber controllin 'said circuit and insulating means protecting said,thermostat from said heating means.

'14. An electric heating device comprising a casing, an inneren/'ning thereforkheat inl cltriotenninals buried Within the casing,

' .ii-cover for said chamber, insulatin rods mounted vupon the cover, electrically eated 'mits earned within said chamber and 15 means comprising said rods for connecting said units with said terminals.

y 16. An electric heating device comprising vzl/casin'g, an inner lining therefor, heat insuv"flirting material surrounding said inner lin- .20' 1n'g5 a removabl e cover for the casing, insu-..

f ,lqated rods carried by Sald cover, termlnalfs buried beneath the inner chamber iu seid casing, heating umts above seid tern mais and means Comprising said rods for connect# ing said heating units and said termxai, a thermostat adjacent said heating units and adapted to control the electric circuit. i

17. An electric heating device com rising an insulating casing a chamber" t. terrein, .electric terminals buried within "the Casin a cover for said chamber,l ineulating ro .s mounted upon the cci/er, electriceiv heated units carriedL within seid @hammer l" means comprising Said for cenvi said units with said i:terminals7 e the adjacent/said heating units and adapt-c control. the cectric circuit.l

HENRY RU Witnesses:

FRANCIS W. Penman, Jr., SOPHIE B. NEnNEm 

